Only 37 per cent of alcohol bottles carry warnings about safe consumption and drinking during pregnancy — almost two years after state and federal governments told the industry to apply them.

An audit by the Foundation for Alcohol Research and Education has found only 31 per cent of wine bottles and 35 per cent of beer products carry the labels that warn about safe alcohol consumption levels.

State and federal health ministers have given the industry until the end of this year to voluntarily implement the labels.

Spirit and mixed drinks products were the best at complying with the voluntary warning labels with 43 per cent of products using them.